/**
 * Copyright 2005 The Apache Software Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.edi.util;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

import com.edi.db.cfg.Environment;
  
/**
 * 配置文件工具类
 *
 */
public class ConfigHelper {
	public static InputStream getResourceAsStream(String resource) throws IOException {
		String stripped = resource.startsWith("/") ?
				resource.substring(1) : resource;

		InputStream stream = null;
		ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
		if (classLoader!=null) {
			stream = classLoader.getResourceAsStream( stripped );
		}
		if ( stream == null ) {
			stream = Environment.class.getResourceAsStream( resource );
		}
		if ( stream == null ) {
			stream = Environment.class.getClassLoader().getResourceAsStream( stripped );
		}
		if ( stream == null ) {
			throw new IOException( resource + " not found" );
		}
		return stream;
	}
	public static Properties getProperties(String propsfile) throws Exception{
		Properties prop=new Properties();
		InputStream stream=getResourceAsStream(propsfile);
		prop.load(stream);
		stream.close();
		return prop;
	}
}
